UnScramble this Word: l t e r i t?

Questions

who succeded spiro agnew as us vice president?

what was the first video ever shown on mtv?

what company produces the orange drink tang?

whose law illustrates that when a cork is inserted into a flask, and great amounts of pressure are forced upon the cork, the flask will explode?

what is the name of the german/swiss/american mathematical physicist best remember for his theories on relativity?